Crossfont - Easy-to-use font editor for Mac
Marvel for iOS - Rapid design and prototyping for the iPhone and iPad
BitFontMaker2™ - Fast and easy Online Bitmap font Editor.
Peetch - The last PowerPoint Pitchdeck you’ll ever need
FontForge - Free (libre) font editor for Windows, Mac OS X and GNU+Linux
Keynotopia - Prototyping straight into Keynote or Powerpoint